Width of the rectangle is 14/3 feet.
What is Rectangle?Rectangle is a two dimensional figure which has four sides and four angles and all the angles are right angles.
Area of a rectangle = Length × Width
Length = 3/7 feet
Area = 2 feet²
Substituting in the equation for the area,
2 = 3/7 × Width
Width = (2 × 7) / 3
= 14/3 feet
Hence the measure of width of the rectangle is 14/3 feet.
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a clerk is wrapping two cube-shaped packages and wants to know the smallest amount of wrapping paper that can wrap each package. the edge length of the larger package is 3in. the greater than the length of the smaller package. the surface area of the larger package is 384 in^2. what is the surface area of the smaller package?
The surface of the smaller cubic package is 150 squared inches.
What is the surface area of the smaller package?Remember that for a cube of side length S, the surface area is given by:
A = 6*S^2
In this case,w we know that the surface area of the larger cube is 384 in^2, replacing that we will get:
384 in^2 = 6*S^2
S = √(384 in^2/6) = 8in
And the edge of the smaller package is 3 inches shorter, then its sidelength is:
s = 8in - 3in = 5in
Then its surface area is:
A = 6*(5in)^2 = 150 in^2
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Trapezoid ABCD has parallel sides AB and CD, of lengths 12 and 18, respectively. Diagonals AC and BD intersect at E. Draw the line through E that is parallel to AB and CD, and let P and Q be its intersections with DA and BC, respectively. Find PQ.
PQ is the length of the line segment that is parallel to AB and CD, which intersects DA at P and BC at Q. The length of PQ can be found using the Pythagorean Theorem.
Let PQ = x.
Since the line is parallel to AB and CD, the triangles APE, PQC, and BQD are all right triangles.
Using the Pythagorean Theorem,
12^2 + x^2 = 18^2
x^2 = 18^2 - 12^2
x^2 = 324 - 144
x^2 = 180
x = √180
Therefore, PQ = √180
Since the line through E is parallel to AB and CD, the triangles APE, PQC, and BQD are all right triangles. Using the Pythagorean Theorem, we can calculate the length of PQ. We let PQ = x and set up the equation 12^2 + x^2 = 18^2. After solving for x^2, we get x^2 = 180, and x = √180. Therefore, PQ = √180. This is the length of the line segment that is parallel to AB and CD which intersects DA at P and BC at Q.
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Please answer it asap, it's missing
Answer:
Step-by-step explanation:
To find the value of f(g(-2)), we first need to substitute g(-2) for x in the equation for f(x).
g(-2) = (-2) + 7 = 5
So, f(g(-2)) = f(5)
Now we can substitute 5 for x in the equation for f(x) to find the final value:
f(x) = 3x² - 7x + 15
f(5) = 3(5)² - 7(5) + 15
f(5) = 75 - 35 + 15
f(5) = 55
So, f(g(-2)) = 55
Answer:5
Step-by-step explanation:55
Find the area of the figure.
Answer:
1) 143 square inches
2) 32 square inches
3)152 square yards
4) 150 square inches
Step-by-step explanation:
Finding the area:1) Parallelogram:base= 11 in ;height = 13 in
[tex]\sf \boxed{\text{Area of parallelogram = base * height}}[/tex]
= 11 * 13
= 143 square inches
2) Triangle:base = 8 cm ; height = 8 cm
[tex]\sf \boxed{\text {Area of triangle = } \dfrac{1}{2}*base * height}[/tex]
[tex]\sf =\dfrac{1}{2}*8 * 8\\\\= 4 * 8\\\\= 32 \ in^2[/tex]
3) Kite:diagonal = p = 7 + 12 = 19 yd
diagonal 2 = q = 8 + 8 = 16 yd
[tex]\sf \boxed{\text{Area of kite =} \dfrac{pq}{2}}[/tex]
[tex]\sf =\dfrac{19*16}{2}\\\\= 19*8\\\\= 152 \ yd^2[/tex]
4)Trapezium:a = 13 in ; b = 12 ; h = 12 in
a,b are the parallel sides of the trapezium.
[tex]\sf \boxed{\text{Area of trapezium = }\dfrac{(a + b)*h}{2}}[/tex]
[tex]\sf = \dfrac{(13+12)*12}{2}\\\\\\=\dfrac{25*12}{2}\\\\=25*6\\\\= 150 \ in^2[/tex]
List all possible rational zeros of the function f(x) = 3x^3 + 2x^2 – 3x + 2
Answer:
j
Step-by-step explanation:
l
video rental company offers a plan that includes a membership fee of $10 and charges $2 for every DVD borrowed. They also offer a second plan, that costs $42 per month for unlimited DVD rentals. If a customer borrows enough DVDs in a month, the two plans cost the same amount. How many DVDs is that? What is that total cost of either plan?
The number of DVDs will be 19 for the first plan.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that the video rental company offers a plan that includes a membership fee of $10 and charges $2 for every DVD borrowed. They also offer a second plan, that costs $42 per month for unlimited DVD rentals.
The number of the DVDs will be calculated as:-
C₁ = 2D + 10
The cost for the second plan is,
48 = 2D + 10
2D = 38
D = 38 / 2
D = 19
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A (-3,4),(-4,3),(-4,1),(-2,-4)
B
C
D
Answer: Second one (B)
Step-by-step explanation:
We can count every point as 1. As we look at choice A, the point (-4, 3) doesn't exist on the graph, so we can move to the next choice. Choice B contains all points listed on the graph. We know this because coordinates/points are read as (x,y), where x moves either right (positive) or left (negative), and y moves up (positive) or down (negative) depending on what the given point is.
Answer:
The second one:
(-3,4) (3,4) (1,-4) (-2,-4)
Explanation :
The easiest way to find the right answer is to determine the points given on the graph (x, y)
From the first quarter (x, y) : (3,4)
The sec quarter (-x, y) : (-3,4)
The third quarter (-x, -y) :(-2,-4)
And the fourth quarter (x, - y): (1,-4)
Now, all you have to do is find the right answer from the choices
If Bob is driving along a toll road and passes the first toll reader at 12:00 and is traveling 50 miles an hour, he then passes the second reader 12 miles later at 12:10.
Using the Mean Value Theorem, can you prove that Bob was driving faster than 55 miles per hour at some point?
Responses
Bob’s average speed was 60 miles/hr and the Mean Value Theorem can be used to prove that he was traveling faster than 55 miles per hour at some point between the two toll readers.
Bob’s average speed was 60 miles/hr and the , Mean Value Theorem, can be used to prove that he was traveling faster than 55 miles per hour at some point between the two toll readers.
Bob’s average speed was 72 miles/hr and the Mean Value Theorem cannot be used to prove that he was traveling faster than 55 miles per hour at some point between the two toll readers.
Bob’s average speed was 72 miles/hr and the , Mean Value Theorem, cannot be used to prove that he was traveling faster than 55 miles per hour at some point between the two toll readers.
Bob’s average speed was 72 miles/hr and the Mean Value Theorem can be used to prove that he was traveling faster than 55 miles per hour at some point between the two toll readers.
Bob’s average speed was 72 miles/hr and the Mean Value Theorem can be used to prove that he was traveling faster than 55 miles per hour at some point between the two toll readers.
Bob’s average speed was 60 miles/hr and the Mean Value Theorem cannot be used to prove that he was traveling faster than 55 miles per hour at some point between the two toll readers.
Bob’s average speed was 72 miles/hr and the Mean Value Theorem can be used to prove that he was traveling faster than 55 miles per hour at some point between the two toll readers.
How to determine the true statementWe have the following parameters
Rate = 50 miles per hour
Time = 12:00 to 12:10 where he passed the second reader after 12 miles
This means that he drove 12 miles in 10 minutes or 1/6 hour
The speed within this interval is calculated as
Speed = 12/(1/6)
Evaluate
Speed = 72 miles
So, at a point t, Bob was driving at an instantaneous speed of 72 miles per hour, which is faster than 55 miles per hour.
Therefore, Bob was traveling faster than 55 miles per hour at some point between the two toll readers.
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Rousey Incorporated, had a cash flow to creditors of $16,830 and a cash flow to shareholders of $7,370 over the past year. The company also had net fixed assets of $49,630 at the beginning of the year and $57,040 at the end of the year. Additionally, the company had a depreciation expense of $12,180 and an operating cash flow of $50,935. What was the change in net working capital during the year?
the change in net working capital during the year will be $6,935.
What are mathematical operations?The term "operation" in mathematics refers to the process of computing a value utilizing operands and a math operator. For the specified operands or integers, the math operator's symbol has predetermined rules that must be followed. In mathematics, there are five basic operations: addition, subtraction, multiplication, division, and modular forms.
Given, Rousey Incorporated, had a cash flow to creditors of $16,830 and a cash flow to shareholders of $7,370 over the past year.
Cash flow from assets:
= Cash flow to creditors + Cash flow to shareholders
= $16,965 + $7,559
= $24,524
Since
Net capital spending = Net fixed assets at the end - Net fixed assets at the beginning + Depreciation expense
Cash flow from financial assets = Operating cash flow - Net capital spending - Change in working capital
$24,524 = $51,136 - ($57,130 - $49,705 + $12,252) - Change in working capital
$24,524 = $51,136 - $19,677 - Change in working capital
$24,524 = $31,459 - Change in working capital
Change in working capital = $31,459 - $24,524
= $6,935
Therefore, the change in net working capital during the year will be $6,935.
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facotrs of an expression based on your result from part (a) what are the factors of the polynomial x^3-5x^2-12x 36
The factors of the polynomial x³ - 5x² - 12x + 36 are (x-5) and -12(x+3).
What is the Factorisation of Polynomial?
The factors are the polynomials that are multiplied to produce the original polynomial.
The polynomial x³ - 5x² - 12x + 36 can be factored by grouping. We can factor a common factor of x out of the first two terms and the last two terms.
x³ - 5x² - 12x + 36= x(x² - 5x) -12x(1) +36(1)
= x(x-5)(x+1) -12(x+3)
So, the factors of the polynomial x³ - 5x² - 12x + 36 are (x-5)(x+1) and -12(x+3).
We can also factorize this polynomial by using polynomial division.
we can divide x² - 5x by x, remainder will be -5x and we can divide -12x+36 by x+3, remainder will be 0
x³ - 5x² - 12x + 36 = (x(x-5) -12(x+3))
Hence, the factors of the polynomial x³ - 5x² - 12x + 36 are (x-5) and -12(x+3).
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(4,8) & (2,8)
find the slopee
Answer:
0/-2 or zero slope
Step-by-step explanation:
(4,8), (2,8)
x1 y1 x2 y2
y2- y1
_____
x2 - x1
↓
8-8
___= 0/ -2
2-4
the slope is 0/-2, making it equal 0 slope
In a survey of 653 randomly chosen workers from a manufacturing plant, 68 said that they prefer to work the night shift. The manufacturing plant employees a total of 2,700 workers. Based on this in formations,about how many plant workers refer the night shift?
Answer:
Approximately 281 workers prefer working the night shift
Step-by-step explanation:
68/653 = 0.104134
2700 * 0.104134
281.16
Suppose the standard deviation of the sampling distribution of the sample mean for random samples of size 50 is 0.3 inches. If the mean length of the fish is 8 inches, use the normal distribution to compute the probability that a random sample of 50 fish will have a mean length less than 7.5 inches. Suppose the distribution of fish lengths in this lake was not normal but had the same mean and standard deviation. Would it still be appropriate to use the normal distribution to compute the probability in part (ii)? Justify your answer.
Each sampling distribution becomes more leptokurtic as sample sizes increase due to a reduction in its variety. The sampling distribution's range is smaller than the initial population's range.
Why is standard deviation used?The degree of variation of the data from the mean is referred to as "standard deviation" (or ""). When the standard deviation is low, the data tend to cluster around the mean; when it is large, the data are more spread.Your data set's average level of variability is represented by the standard deviation. It reveals the average distance between each score and the mean.the distribution of data follows a bell curve or is normal. 68% of the scores or data values, or 1 SD, nearly occupy the region of a bell curve starting at position 13 on the y axis.To learn more about standard deviation, refer to:
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The student government snack shop sold 32 items this week.
For each snack type, what percentage of all snacks sold were of that type? Do not round your answers.
The percentages of each snack type that were sold are given as follows:
Fruit cup: 25%.Veggie sticks: 18.75%.Chips: 43.75%.Water: 12.5%.How to obtain the percentage?A percentage is one example of a proportion, as it is obtained by the number of desired outcomes divided by the number of total outcomes, and then multiplied by 100%.
Hence the percentages for each type are obtained as follows:
Fruit cup: 8/32 x 100% = 25%.Veggie sticks: 6/32 = 18.75%.Chips: 14/32 = 43.75%.Water: 4/32 = 12.5%.More can be learned about proportions at https://brainly.com/question/24372153
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at the amusement park, janine bought a bottle of water for $2. she also bought game tickets for $0.50 each. janine spent a total of $15. which of the following equations can be used to find the number of $0.50 game tickets, g, janine bought?
1. 2g-0.50=15
2. 2g+0.50=15
3. 0.50g-2=15
4. 0.50g+2=15
Answer:
4. 0.50g+2=15
Step-by-step explanation:
Approximately how much principal would need to be placed into an account earning 3.575% interest compounded
quarterly so that it has an accumulated value of $68,000 at the end of 30 years?
a. $23,706
b. $23,377
c. $52,069.
d. $58,944
Please select the best answer from the choices provided
The compound interest the answer is b)$23377.
What is compound interest?
The interest that is calculated using both the principal and the interest that has accrued during the previous period is called compound interest. It differs from simple interest in that the principal is not taken into account when determining the interest for the subsequent period with simple interest.
We know that for compound interest, A = [tex]P(1+\frac{r}{n})^n[/tex]
Where,
A = Future amount = $68,000
P = ??
r = 3.575% annual = 0.03575
n = 4 as interest is compounded quarterly
t = time in year = 30 years
Putting the values,
=> 68000 = P [tex](1+\frac{0.03575}{4})^{4*30}[/tex]
=> 68000 = P[tex](1+\frac{0.03575}{4})^{120}[/tex]
=> 68000 = P (1.0089375)[tex]^{120}[/tex]
=> P = $23377.5
Hence the correct option is b)$23377.
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height and weight are two measurements used to track a childs development an organization measures child development by comparing the weights of children who are the same height and the same gender in a certain year weights for all 80 cm girls in the reference population had a mean
μ = 10.4 kg
and standard deviation
σ = 0.2 kg.
Weights are normally distributed.
X ~ N(10.4, 0.2). Calculate the z-scores that correspond to the following weights and interpret them. (Round your numerical answers to two decimal places.)
The z-score for a weight of 10.7 kg is 1.50, which means that the weight is 1.50 standard deviations above the mean of 10.4 kg.
Height and weight are two measurements used to track a childs development an organization measures child development by comparing the weights of children who are the same height and the same gender in a certain year weights for all 80 cm girls in the reference population had a mean
μ = 10.4 kg
and standard deviation
σ = 0.2 kg.
Weights are normally distributed.
X ~ N(10.4, 0.2). Calculate the z-scores that correspond to the following weights and interpret them. (Round your numerical answers to two decimal places.)
Weight = 10.7 kg
Z-score = 1.50
This means that the weight of 10.7 kg is 1.50 standard deviations above the mean of 10.4 kg.
First, calculate the difference between the weight (10.7 kg) and the mean (10.4 kg):
x - μ = 10.7 - 10.4 = 0.3
Then, divide the difference by the standard deviation:
(x - μ)/σ = 0.3/0.2 = 1.50
The z-score is 1.50, which means that the weight of 10.7 kg is 1.50 standard deviations above the mean of 10.4 kg.
The z-score for a weight of 10.7 kg is 1.50, which means that the weight is 1.50 standard deviations above the mean of 10.4 kg.
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Write an algebraic expression as indicated.
Two numbers total 123. Let x represent one of the numbers. Write an algebraic expression for the other number.
The other number can be represented as 123-x.
Maria clothing store sold $5230 worth of items last week. She invested half of her income
from the week in new items to sell. Then she paid herself $300 salary for the week. A
manufacturer gave her a rebate of $500 for items that were reduced at the factory. What was
her ending balance?
Write the expression and find the balance.
(5230-300+500)/2; $2715
(5230/2)-300 + 500; $2815.
(5230/2) +500 - 300; $2815
Answer:
Step-by-step explanation:
Maria clothing store sold $5230 worth of items last week. She invested half of her income from the week in new items to sell.Then she paid herself $300 salary for the week. A manufacturer gave her a rebate of $500 for items that were reduced at the factory. What was her ending balance? Write the expression and find the balance.
We want to know how a student’s level of education and their gender impacts both their annual income and amount of student loan debt. However, we want to account for the annual income of the student’s parents as well. So which Statistical Test are you going to use?
The statistical tests that van be used to analyze the relationship include multiple regression analysis and ANOVA.
How to explain the statistical test?There are several statistical tests that could be used to analyze the relationship between a student's level of education, gender, annual income, student loan debt, and the annual income of their parents.
One possibility is to use a multiple regression analysis, which would allow you to simultaneously examine the impact of all of these variables on annual income and student loan debt.
Another option could be to use a two-way ANOVA (Analysis of Variance) which would allow you to examine the interaction effects of the student's level of education and gender on annual income and student loan debt. And also, you can use chi-square test for categorical variables like gender. It ultimately depends on the specific research question and the type of data you have.
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ou run an experiment in which you flip 3 coins, and each one lands heads or tails. your sample space can be written: {hhh, hht, hth, htt, thh, tht, tth, ttt}. assume all outcomes have equal probability.
The sample space can be written as {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}. Each outcome has a probability of 1/8, since there are 8 equally likely outcomes in total.
What is probability?
Probability is a measure of the likelihood of an event occurring. It is a value between 0 and 1, where 0 represents an impossible event and 1 represents a certain event. The probability of an event A, denoted as P(A), is given by the ratio of the number of favorable outcomes to the total number of possible outcomes.
In this experiment, the sample space is the set of all possible outcomes of flipping 3 coins. Each coin can land either heads (H) or tails (T), so there are 2^3 = 8 possible outcomes of flipping all three coins.
The sample space can be written as {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}. Each outcome has a probability of 1/8, since there are 8 equally likely outcomes in total.
Hence, The sample space can be written as {HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}. Each outcome has a probability of 1/8, since there are 8 equally likely outcomes in total.
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[tex]\frac{c^{2}-d^{2} }{d^{2}+cd-2c^{2} }[/tex]
The value of the expression (c² - d²) / (d² + cd - 2c²) in the simplified form will be negative (c + d) / (d + 2c).
What is the value of the expression?When the relevant components and basic processes of a numerical method are given values, the expression's result is the result of the computation it depicts.
The definition of simplicity is making something simpler to achieve or grasp while also making it a little less difficult.
The expression is given below.
⇒ (c² - d²) / (d² + cd - 2c²)
Factorize the numerator and denominator, then we have
⇒ (c² - d²) / (d² + cd - 2c²)
⇒ (c² + cd - cd - d²) / (d² + 2cd - cd - 2c²)
⇒ [c(c + d) - d(c + d)] / [d(d + 2c) - c(d + 2c)]
⇒ [(c + d)(c - d)] / [(d - c)(d + 2c)]
⇒ - [(c + d)(d - c)] / [(d - c)(d + 2c)]
⇒ - (c + d) / (d + 2c)
The value of the expression (c² - d²) / (d² + cd - 2c²) in the simplified form will be negative (c + d) / (d + 2c).
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Prove that V is infinite dimensional if and only if there is a sequence of vectors v1,v2,... in V such that the list (v1,v2,...,vn) is linearly independent for
Let (v₁, v₂ . . . vₙ) be a list of vectors in V. This list is linearly independent if and only if the list (v₁ - v₂, v₂ - v₃ . . . . , vₙ₋₁ - vₙ, vₙ) is linearly independent.
Observe that,
0 = a₁(v₁ - v₂) + . . . .+ aₙ₋₁(vₙ₋₁ - vₙ) + aₙ vₙ
= a₁ v₁ + (a₂ - a₁)v₂ + . . . . + (aₙ - aₙ₋₁)vₙ
So,
(v₁ - v₂, v₂ - v₃. . . . vₙ₋₁ - vₙ, vₙ)
These are linearly independent if and only if a₁ = a₂ = . . . .= aₙ = 0, if and only if a₁ = a₂ - a₁ = . . . . . aₙ - aₙ₋₁ = 0, if and only if
(v₁, v₂, . . . ., vₙ)
are linearly independent.
--The given question is incomplete, the complete question is
"Prove that V is infinite dimensional if and only if there is a sequence of vectors v₁, v₂ . . . vₙ in v such that the list (v₁ - v₂, v₂ - v₃ . . . . , vₙ₋₁ - vₙ, vₙ) is linearly independent."--
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Dinesh is a mason and he takes Rs 3,250 for 5 days working everyday. If he received only Rs 7,800 in two weeks, how many days was he absent in his work?
Given Dinesh earns Rs 3,250 for 5 days working everyday, we can divide the total by 5 to find that he earns Rs 650 daily. Because there are 14 days in two weeks, we can set up an equation:
650 • 14 = Rs 9,100
This means if Dinesh worked every day for two weeks, he would earn Rs 9,100; however, we are told he earns 7,800 in the two weeks. Upon subtraction of 9,100 and 7,800, we will find that Dinesh earned Rs 1,300 less than he would have for a full two weeks.
We know Dinesh earns Rs 650 daily, so we can divide 1,300 by 650 to find that he was absent for 2 days out of the two weeks.
Eliminiation Please!
0.5x + 0.5y = -2
x - 0.25y = 6
Answer:
x = 4; y = -8
Step-by-step explanation:
0.5x + 0.5y = -2
x - 0.25y = 6
Rewrite the first equation. Multiply both sides of the second equation by 2 and write below the first equation. then add the equations.
0.5x + 0.5y = -2
+ 2x - 0.5y = 12
---------------------------
2.5x = 10
x = 4
x - 0.25y = 6
4 - 0.25y = 6
-0.25y = 2
y = -2/0.25
y = -8
x = 4; y = -8
Differentiate the given function.
y=x² √4x-3
Answer: I hope this helps you
Step-by-step explanation:
[tex]y=x^2\sqrt{4x-3}\implies \cfrac{dy}{dx}=\stackrel{\textit{\LARGE product rule}}{2x\sqrt{4x-3}~~ + ~~x^2\cdot \stackrel{\textit{chain rule}}{\cfrac{1}{2}(4x-3)^{-\frac{1}{2}}(4)}} \\\\\\ \cfrac{dy}{dx}=2x\sqrt{4x-3}~~ + ~~\cfrac{2x^2}{\sqrt{4x-3}}\implies \cfrac{dy}{dx}=\cfrac{8x^2-6x+2x^2}{\sqrt{4x-3}} \\\\\\ \cfrac{dy}{dx}=\cfrac{6x^2-6x}{\sqrt{4x-3}}\implies \cfrac{dy}{dx}=\cfrac{6x(x-6)}{\sqrt{4x-3}}[/tex]
Please HELP
Tyshawn is ordering a taxi from an online taxi service. The taxi charges four dollars for just a pick up then an additional $1.50 per mile driven. write a linear function in the form of (y= mx+b) to represent the situation.
A linear function in the form of (y = mx + b) to represent the situation is y = 1.5x + 4.
What is the two factors?The equation y = 4 + 1.5x is a mathematical representation of the relationship between the two factors that determine the cost of the taxi ride. It is a linear equation, where y is the total cost of the taxi ride, x is the number of miles driven, and the numbers 4 and 1.5 are the coefficients.
In this equation, y is the dependent variable, and x is the independent variable.
The cost of the taxi ride is determined by two factors: the flat fee for the pickup and the additional cost per mile driven.
Let y be the total cost of the taxi ride, measured in dollars.
Let x be the number of miles driven, measured in miles.
The flat fee for the pickup is $4, and the additional cost per mile driven is $1.50.
So, the total cost of the taxi ride, y, is equal to the flat fee plus the additional cost per mile driven multiplied by the number of miles driven.
y = 4 + 1.5x
This can also be written in the form of (y= mx+b) where y is the total cost of the taxi ride, x is the number of miles driven, m is the cost per mile and b is the flat fee or initial cost.
So, the function in the form of (y= mx+b) is y = 1.5x + 4
This is a linear function because the variable x is raised to the power of 1, and the relationship between x and y is a straight line.
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if"(x) changes from to-atX-2 , what is happening at x = 2 ? (Check all that apply. There may or may not be multiple correct answers.) A. an inflection point a relative min a change in direction (increasing to decreasing)B. a relative max a critical point a change in concavity
At x = 2, there is an inflection point and a change in trend (from increasing to decreasing).
What is inflection point?The function can change from being "concave up" to "concave down" or vice versa at points known as inflection points. Where the second derivative changes signs can be used to locate them. A point of inflection is defined as the location where the second derivative of a function, f′′, equals zero. To make the geometric significance of this clearer, we must wait a moment. If the curve "bends" upward, a portion of the graph of f has a concave upward slope. For instance, the entire popular parabola y=x2 is concave upward.
Here,
At x = 2, there is an inflection point, a relative minimum, and a direction change (from increasing to decreasing).
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Abe can mow a lawn in 3 hours. After he has been working for 1/3 hour, Bob helps, and working together, it takes 1 and 2/3 hours more to finish the job. How long would it take Bob to mow the lawn by himself?
Please show work.
Bob would take 5 hours to mow the law by himself.
Let us consider, the area of the lawn to be mowed to be x inch².
It is given that the law can be mowed by Abe alone in 3 hours.
We know that,
Rate of work = Work/Time
⇒ rate of work of Abe = area to be mowed(work)/time taken
= (x/3) inch²/hour
Now,
Abe has been working alone for 1/3 hour
⇒work done by Abe alone = rate of work of Abe x time
= (x/3) inch²/hour x 1/3 hour
= x/9 inch²
Remaining work = x - x/9 = 8x/9 inch²
Let, the rate of work of Bob be y inch²/hour.
It is given that the time taken by Abe and Bob to complete the remaining work together is 1 and 2/3 hours, i.e, 5/3 hours.
Therefore,
The rate of work of Abe and Bob when working together
= work ÷ time
=(8x/9) ÷ (5/3)
=8x/15 inch²/hour
⇒ Rate of work of Abe + Rate of work of Bob = 8x/15
⇒ x/3 + y = 8x/15
⇒ y = (8x/15) - (x/3)
⇒ y = 3x/15 = x/5 inch²/hour
Thus, the time taken by Bob to mow the law by himself
= work ÷ rate of work
= x inch² ÷ (x/5) inch²/hour
= 5 hours
So, it would take 5 hours for Bob to mow the lawn alone.
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Chantelle works at Mattresses R Us. She had $60,000 in sales and made $1200 in commission. What percent commission does she get?
Answer =
I got 2 i did math wrong... please help
The percentage of commissions is obtained as follows:
2%.
How to obtain the percentage of commission?The percentage of commission is obtained applying the proportions in the context of this problem.
A proportion is applied as the sales commission percentage is given by the sales commission divided by the total number of sales, and then multiplied by 100%.
The parameters for this problem are given as follows:
$60,000 in sales.Commission of $1,200.Hence the percentage can be then obtained as follows:
1200/60000 x 100% = 2%.
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